Sports digest: Ex-49er Newberry retires

After years of battling knee problems, former 49ers center Jeremy Newberry has decided to retire.

Newberry, 33, signed with the Atlanta Falcons in June, but his agent told the Associated Press on Tuesday that Newberry hurt his left knee.

Doug Hendrickson said Newberry's knee "just kind of went out on him recently when he was pushing hard to get ready for training camp."

The 49ers drafted Newberry out of Cal in the second round in 1998. He suffered a torn anterior cruciate ligament during mini-camp and missed the entire 1998 season. But Newberry started all 16 games in 1999, 2000, '02 and '03.

Newberry again struggled with knee problems in the final stages of his nine seasons with the 49ers. He joined the Raiders in 2007 and played for the San Diego Chargers last season.

A woman has filed a lawsuit accusing Pittsburgh Steelers quarterback Ben Roethlisberger of raping her last summer in his hotel room at a casino in Lake Tahoe during a celebrity golf tournament.

Roethlisberger's lawyer denied the allegations and pointed out that the woman never went to the authorities. The woman is seeking a minimum of $440,000 in damages from the quarterback, at least $50,000 in damages from Harrah's casino officials and an unspecified amount of punitive damages.

The woman's lawsuit says she didn't file a criminal complaint because she feared Harrah's would side with Roethlisberger and she would be fired.

Former Buffalo Bills quarterback J.P. Losman signed with the Las Vegas franchise in the United Football League, which begins its first season in October.

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Diving

Ariel Rittenhouse of Santa Cruz took fifth in the women's 3-meter in Rome, becoming the first American woman to finish in the top five of the world championships since Karen Dalton in 1994.

China's Guo Jingjing won the event, her fifth straight world championship.

Britain's Tom Daley won the men's 10-meter platform.

Basketball

Duke Coach Mike Krzyzewski will return to the lead the United States in next summer's world championships and when it defends its gold medal in London in 2012.

The Americans won the Olympic gold last year in Beijing.

Free-agent forward Matt Barnes has agreed to a two-year contract with the Orlando Magic.

The Toronto Raptors signed guard Jarrett Jack to a $20 million deal over four years.

The Raptors signed the restricted free agent to an offer sheet July 13, and the Indiana Pacers declined to match the offer.

Free-agent forward Sean May agreed in principle to a one-year contract with the Sacramento Kings.

Former Memphis Grizzlies point guard Antonio Burks remains in critical condition a day after being shot during a robbery.

Miscellany

Kimo Leopoldo, a mixed martial arts fighter who some media outlets reported had died overnight, has come forward to prove he's alive.

The Orange County Sheriff's Department fielded about 200 calls Tuesday about the purported death of Leopoldo, a 41-year-old Costa Mesa resident who once fought in the UFC.

Leopoldo said he didn't know where the rumor of his death started.

The Montreal Canadiens have avoided salary arbitration with center Tomas Plekanec, signing him to a one-year contract worth $2.75 million.